Google login despite being published/public

I’ve had your plugin installed for a month or so now, but I still can’t seem to use it with my Google Sheets page.

My google doc:
https://docs.google.com/spreadsheets/d/1X8QF91YH1kdHHx9ZJyoKTNO357LwMcl22mlshdPierY/edit#gid=0

How I’m entering the data from your plugin:

[gdoc key=”1X8QF91YH1kdHHx9ZJyoKTNO357LwMcl22mlshdPierY”]

I just get the google login page using that, and I’m not sure what I’m doing wrong.